PageView.qml

import QtQuick                  2.3
import QtQuick.Controls         1.2
import QtQuick.Layouts          1.2

import QGroundControl               1.0
import QGroundControl.Palette       1.0
import QGroundControl.ScreenTools   1.0

Rectangle {
    id:     _root
    height: pageFlickable.y + pageFlickable.height + _margins
    color:  qgcPal.window

    property var    qgcView         ///< QGCView to use for showing dialogs
    property real   maxHeight       ///< Maximum height that should be taken, smaller than this is ok

    property real   _margins:           ScreenTools.defaultFontPixelWidth / 2
    property real   _pageWidth:         _root.width
    property var    _instrumentPages:   QGroundControl.corePlugin.instrumentPages

    QGCPalette { id:qgcPal; colorGroupEnabled: parent.enabled }

    QGCComboBox {
        id:             pageCombo
        anchors.left:   parent.left
        anchors.right:  parent.right
        model:          _instrumentPages
        textRole:       "title"
        centeredLabel:  true
        pointSize:      ScreenTools.smallFontPointSize

        Image {
            anchors.leftMargin:     _margins
            anchors.left:           parent.left
            anchors.verticalCenter: parent.verticalCenter
            source:                 qgcPal.globalTheme == QGCPalette.Light ? "/res/gear-black.svg" : "/res/gear-white.svg"
            mipmap:                 true
            width:                  parent.height -(_margins * 2)
            sourceSize.width:       width
            fillMode:               Image.PreserveAspectFit
            visible:                pageWidgetLoader.item.showSettingsIcon

            QGCMouseArea {
                fillItem:   parent
                onClicked:  pageWidgetLoader.item.showSettings()
            }
        }
    }

    QGCFlickable {
        id:                 pageFlickable
        anchors.margins:    _margins
        anchors.top:        pageCombo.bottom
        anchors.left:       parent.left
        anchors.right:      parent.right
        height:             Math.min(_maxHeight, pageWidgetLoader.height)
        contentHeight:      pageWidgetLoader.height
        flickableDirection: Flickable.VerticalFlick
        clip:               true

        property real _maxHeight: maxHeight - y - _margins

        Loader {
            id:     pageWidgetLoader
            source: _instrumentPages[pageCombo.currentIndex].url

            property var    qgcView:    _root.qgcView
            property real   pageWidth:  parent.width
        }
    }
}